摘要
本文对某型涡桨发动机地面台架进气道进行了两种方案设计,并且运用数值模拟手段对两种方案模型进行了不同流量工况下的数值计算,对比分析结果表明方案2模型要优于方案1:(1)方案2模型进气道下型面具有更小的低速区范围,流道内部流场分布更加均匀;(2)方案2模型在进气机匣出口截面处具有更小的畸变指数;(3)在大流量工况时,方案2模型的总压恢复系数略大于方案1,在最大流量工况有所提高;(4)方案2模型在进气机匣出口处的马赫数略大于方案1。
In this paper,two schemes have been designed for a ground test bench's inlet of a turboprop engine,and then numerical simulation was used to calculate the two kinds of models under different mass conditions.The results show that model 2 is better than model 1 in several aspects:(1)Compared with model 1,model 2 has a smaller range of low speed area and has more uniform flow field distribution inside the inlet;(2)The distortion index at the inlet casing's outlet of model 2 is smaller than that of model 1;(3)Model 2 has higher total pressure recovery coefficient than model 1 at large flow conditions;(4)Model 2 has larger mach number at the inlet casing's outlet than model 1.
作者
岳洋
周臣
Yue Yang;Zhou Chen(AECC Hunan Aviation Powerplant Research Institute,Zhuzhou 412002,China)
出处
《科学技术创新》
2022年第16期169-172,共4页
Scientific and Technological Innovation
